[rebeccaramos]

Approaching 15K miles on the Passport and the Maintenance Minder is showing "B16". The "6" is for a "Rear Differential Fluid Change" at 15K mile intervals or 7.5K mile interval for severe conditions. Have not actually performed the fluid change, yet. Based on information found, this is the procedure. Honda service charges $100 to $150?

Prep for a DIY rear differential fluid change, will need:

• 2 quarts of Honda's Dual Pump Fluid II (08200-9007)... via Amazon
• 18mm (90471-PX4-000) and 20mm (94109-20000) washers... 5 pairs via Amazon
• 3/8" ratchet or 3/8" breaker bar
• 3/8" socket extension
• fluid pump for quart bottle
• oil pan
• 3/8" torque wrench (35 ft-lb)... as needed

Fluid fill bolt is at the rear of the differential behind the rear axle frame. Undo the fill bolt first with socket extension and 3/8" ratchet or breaker bar, in the event that there is trouble with the drain bolt. Photo is looking forward from the rear of the vehicle...

Fluid drain bolt is on the left side, towards the front of the differential. With oil pan beneath, undo the fill bolt first with 3/8" ratchet or breaker bar. Photo is looking forward from the left side, behind the left rear wheel...

Clean drain bolt and replace the washer. Reinstall drain bolt and torque to 35 ft-lb.

Refill differential with new fluid using pump until it starts to overflow. Per the owner's manual, it is just shy of 2 quarts.

Clean fill bolt and replace the washer. Reinstall fill bolt and torque to 35 ft-lb.

Done.

 

[rebeccaramos]

@osu1978 ... Yes, you are correct. I recall seeing that in a YouTube video for other Honda models.

 

[rebeccaramos]

You need get 3 quarts, 2 was not quite enough on the Pilot and Ridgeline to get to the correct level.

Thanks. Fortunately for me, I am doing the diff on my son's CR-V first. The CR-V takes less than 1.5 qt, so I should have extra fluid for the Passport.

 

[rebeccaramos]

Performed the differential fluid change with my son on his CR-V over the weekend. Most difficult part was getting a ratchet attached and applying sufficient leverage to loosen the two plugs on the CR-V, while laying on the ground. Access to the Passport's fill plug and drain plug should be better. Then, you give your hand a workout pumping in the new fluid.